I'm making a wall-hung tool cabinet, mostly from 3/4 birch ply and it will have doors ~3" deep to store tools hanging from the inside. I intend to use the 3/4 ply for the door frames, either finger joints or glued/screwed rabbets, but I'm not sure how to make a stable door that won't rack if I use solid wood panels. I have a bunch of 1/2" mahogany I'd like to use for this instead of plywood panels.
Do you think the solid panels will provide adequate strength if they are in grooves and allowed just enough space for expansion?